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Planar Laser-Based QEPAS Trace Gas Sensor.
- Source :
-
Sensors (Basel, Switzerland) [Sensors (Basel)] 2016 Jun 28; Vol. 16 (7). Date of Electronic Publication: 2016 Jun 28. - Publication Year :
- 2016
-
Abstract
- A novel quartz enhanced photoacoustic spectroscopy (QEPAS) trace gas detection scheme is reported in this paper. A cylindrical lens was employed for near-infrared laser focusing. The laser beam was shaped as a planar line laser between the gap of the quartz tuning fork (QTF) prongs. Compared with a spherical lens-based QEPAS sensor, the cylindrical lens-based QEPAS sensor has the advantages of easier laser beam alignment and a reduction of stringent stability requirements. Therefore, the reported approach is useful in long-term and continuous sensor operation.
Details
- Language :
- English
- ISSN :
- 1424-8220
- Volume :
- 16
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Sensors (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 27367686
- Full Text :
- https://doi.org/10.3390/s16070989